import type { IToolLoopContextStrategy, Message, SerializableStrategyState, ToolLoopContextBase, ToolRound } from '@mcp-abap-adt/llm-agent';
/** MIGRATION-ONLY: holds a pre-release raw transcript (arbitrary Message[]) that
 *  cannot be expressed as ToolRound[]. Never injected as a factory. */
export declare class LegacyTranscriptContextStrategy implements IToolLoopContextStrategy {
    private rawMessages;
    private newRounds;
    constructor(opts: {
        rawMessages: Message[];
    });
    record(round: ToolRound): Promise<void>;
    form(base: ToolLoopContextBase): Promise<Message[]>;
    snapshot(): SerializableStrategyState;
    restore(state: SerializableStrategyState): void;
}
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